Grinding attachment for sewing-machines



(No Model.) 2 Sheets-Sheet 1.

H. ABNEY.

GRINDING ATTACHMENT EOE SEWING MACHINES.

No. 337,911. Patented Mar. 16, 1886.

(No Model.) H ABNEY 2 Shets-Sheet 2.

GRINDING ATTACHMENT FOR SEWING MAGHINES.

No. 337,911. Patpnted Mar. 16, 1886.

UNITED STATES ATENT OFFICE,

HENRY ABNEY, OF CRAWFORD, MISSISSIPPI.

SPECIFICATION forming part of Letters Patent No. 337,911, dated March 16, 1886.

Application filed June 6,1885. Serial No. 167,867. No model.)

To all whom it may concern:

Be it known that I, HENRY ABNEY, a citizen of the United States of America, residing at Crawford, in the county of Lowndes and State of Mississippi, have invented certain new and useful Improvements in Grinding Attachments for Sewing-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention pertains to improvements in sewing-machine attachments for sharpening or polishing scissors or other cutting implements; and it consists of the combinations of parts and their construction, substantially as hereinafter fully set forth, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a perspective view of my improvement or attachment as applied to a sewing-machine table or top and its balance-wheel. Figs. 2, 3, 4, and 5, are detail views of my attachment.

In the embodiment of my invention I employ a flanged or T-shaped in cross-section bar or rail, A, having one end hooked to re ceive the front edge of the sewing-machine table, a holding-screw, a, being inserted through the arm of the hooked end of said bar and bearing against and securing adjustably the bar to the table. Upon this bar is fitted adjnstably a socket-bar, B, the latter bar having an open-sided socket and held at its point of adjustment by a holding'screw, b.

C is a tubular bearing box or sleeve cast or formed upon the upper edge of a vertical plate or standard, d, fitted to slide vertically in the socket of the bar B, being inserted into socket through its open side. The tubular sleeve or box 0 receives and supports ashaft, 6, having upon one end a friction wheel or disk, f, having a rubber tire around its periphery, which has frictional contact with the balance-wheel of the sewing-machine to transmit motion to the shaft 6. Upon the opposite end of the shaft e to thatend having the disk or wheel f is an emery-wheel, D, for sharpening purposes, which wheel may also be used forpolishing purposes. The standard d of the shaft sleeve or box 0 is provided with an elongated vertical slot, 9, which receives a holding-screw, h, which is swiveled atz' in the bar B, and fitted with a clamp -nut, j, bearing against the standard or plate d, to aid the screw h in holding in position said standard or plate with the shaft-sleeve, together with the shaft and the friction and emery wheels. The adjustability of the hearing boX or sleeve supporting plate or standard d permits of readily putting the emery-wheel into and out of motion, as may be desired, the same enabling the moving of the friction wheel or diskf into and out of contact with the balance or fly wheel.

For conveniently holding the scissors or other implement to the'emery-wheel for sharpening or polishing, I employ a bar, E, the lower end of which is secured to the outer side of the support or bar B, preferably by a screw contiguously to the emery-wheel, said bar E having pivoted or connected to it a second bar, E, and to which latter bar, E, is rigidly secured near its forward end a clampplate, E, said clamp-plate having a small right-angular projection at its upper portion, which is integral with the bar E. Near the central lower edge of said clamp-plate is provided a screw-threaded orifice for reception of a holdingscrew, e, for securing between the clamp plate and the bar E theimplemcnt being sharpened or polished. The bar E is provided with a vertical slot, 6, extending about two-thirds the length of the bar, its one end terminating nearly at the upper end of the said bar, and through which slot the pivot of the bar E passes, said pivot k having a thumb-nut, 7c, fitted upon screw-threads at one end of said pivot. This nut with the pivot enables the holding of the barE to which the clampplate holding the implement being sharpened or polished is applied either vertically or horizontally, in presenting the implement to the emery-wheel as the sharpening or polishing thereof may require.

WVhen not needed, the attachment in its entirety may be removed from the sewing-Inachine table and be put at one side out of the the way until again wanted, the manner of effecting which removal of parts of the attachment is apparent from the drawings and what has gone before.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. The combination, with the T-shaped in cross-section adjustable rail or bar having a hooked end and a holding-screw of thevsocketed bar fitted. adjustably upon said T-shaped bar or rail, the plate or standard provided with a vertical slot together with a holdingscrew and having at its upper end the tubular shaft sleeve or box adjust-able in said socketed bar, and the emery-wheel having its shaft supported in said shaft sleeve or box, substantially as shown, and for the purpose set forth.

2. The combination, with the emery-wheel, its shaft-supporting plate or standard, and the socketed sl'lpporting-bar, of the implementholding bar connected to said latter supporting-bar and having a pivoted bar with its 

